Specs: Headphone amp: 5mW+5mW @ 16ohms JEITA

Features:

• HD Digital amp
• 6-band EQ
• A-B repeat mode, handy for learning phrases
• No support for native MP3 playback
• NiMH battery
• Plays back Hi-MD (1GB) media and original MD media.
• Backlit, jog-dial equipped remote.
• Multi-voltage (100-240VAC) Recharging stand.

links:

• Sony press release
• AV-Watch page

  Reviews:

  Battery life SP/LP2/LP4 on reformatted 300MB std-MD medium	Play	Recharge
  NiMH NH-14WM	25.5/30.5/34 hr	full: 3.5 hr
  AA	34/44.5/48 hr
  Both	64.5/76/85 hr
  Battery life PCM/Hi-SP/Hi-LP on reformatted 300MB std-MD medium	Play	Recharge
  NiMH NH-14WM	11/23/31.5 hr
  AA	13.5/30.5/44 hr
  Both	26.5/58.5/74.5 hr
  Battery life PCM/Hi-SP/Hi-LP on 1GB Hi-MD medium	Play	Recharge
  NiMH NH-14WM	14.5/25.5/30.5 hr
  AA	17.5/30.5/42 hr
  Both	36/64/80 hr